Rim-rolling machine



2 1,632,560 E. J. PETERSON RIM ROLLING MACHINE June 14 ,1927.

. F iled ma 1. 1924' s sheets-shut 11v VENTOR J ATTORNEYS June 14, 1927.

. E. J. PETERSON RIM ROLLING MACHINE I Filed May 1. 1924 3 Sheets-Sheet 2 V Quorum,

1,632 560 June 14? I927 E. J. PETERSON an! ROLLING momma Filed May 1.' 1924 -5 Sheets-Sheet 3 [mf/ J f/ arson Patented June l4, 1927.

UNITED STATES PATENT OFFICE.

.EMIL J. PETERSON, OF JACKSON, MICHIGAN, ASSIGNOR T HAYES WHEEL COMPANY,

OF JACKSON, MICHIGAN.

RIM-ROLLING MACHINE.

Application filed May 1, 1924. Serial No. 710,276.

This invention relates to improvements in rim rolling machines.

The objects of the invention are: First, to provide an improved, means for '6 manipulating and driving the main rolls of I such a machine whereby they will freely and effectively act upon an automobile rim in conforming the same.

Second, to provide an improved compenlo sating means to permit the free movement of the, forming rolls when they come into engagement with the metal of the rim.

Further. objects, and objects relating to details and economies of construction and c t 15 operation will definitely appear from the detailed description to follow. 7

I accomplish the objects of my invention by the devices and means described. in the following specification. The invention is 20 clearly defined and pointed out in the claims.

The parts of a machine necessary to understand my invention are illustrated in the accompanying drawing, "forming'a part of this application, in which Fig. I is a vertical detail sectional'elevation, parts being shown in full lines, transverse to the axis of the rolls through the main parts of a rim rolling machine embodying my invention taken on the irregular-line so corresponding to line 11 of Fig. II showing the gearing trains. 1

' Fig. II is a detail sectional elevation view of the same machine, parts being sho in full lines, taken on the irregular section line 2 -2 of Fi I, axially and lon itudinally of the rolls, t e rolls being closed to final contact position." Fig. 111 is a detail sectional view of the earing trains taken on the same section fine as Fig. I, showing the rolls in closed position. f K Fi IV is an enlarged detail sectional view,-parts being shown in full lines, taken on theirregular line 4'4 of Figs. I, III,- andV'.-

f Fig.- V is an enlarged detall view, partly in section, on theirregular line 5 -5 of v Fig. IV, showing details of the compensatingjgear means. i

Fig. VI is an enlarged detail sectional view through the compensating gear dog and adjacent parts showing the spring in full lines and 1ts operative relation.

, the dog.

Fig. VII is a detail perspective view of In the drawing similar reference characters refer to similar parts throughout the several views,v and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines. The parts of the drawing will be considered by their numbers.

The base 1,,1 carries frame parts 2, 2 connected by a frame member 2. The upper fixed roll shaft 3 is suitably journaled in the upper part of the frame carrying the stationary forming roll 4.

The shaft 5 carries the movable roll 6 an is journaled in a suitable slide 7 carried on ways 8. The slide is actuated from the rock shaft 9'having arms 10 towhich are connected the links 11 which connect to the slide 7 by universal joints 12. p

The rock shaft 9 is actuated by arms 13 connected by pitman 14 to cross head 15 operated from air cylinder 16 or other means which is regulated and controlled by the regulating means 17. These parts, as they do not pertain to my invention, are not illustrated or described ,in detail.

The machine is driven by the driving shaft 18 having driving pinion 19 meshing with the gear 20 which is keyed or otherwise secured to thefixed roll shaft 3. r

The movable roll shaft '5 is driven by a train of gears connecting to a gear at the central part of the main fixed shaft 3. This comprises the driving gear 21 on-the said shaft, see Figs. I and II, which meshes with the intermediate gear 22 which meshes with the gear 23 of the compensating gear which,-

by the coindpensating devices, drives the gear 24 which rives gear 25 which drives gear 26 which is supported in the rocker 27 which is pivoted ooaxially with the gear 25. The gear 26 'meshes with and drives gear 29, keyed to the shaft 5.

The compensating means 'and'gear comprises the said gear 23- and the gear24 journaled to rotateindependently and provided with the compensating coupling means therebetween. The gear. 23 is recessed on one face at 231 and the gear 24 is provided with a hub-like extension 241 which is provided with ratchet teeth 242 and a circumferential annular groove 243 between the l teeth 242 and to swing said ratchet teeth and the face of the gear 24. In a recess 282 in, the face of the gear 23 is disposed a dog 233, the forward end of which, 234, is adapted to enga e the ratchet into t e recess 232 when out of engagement.

The dog 233 contains a longitudinal recess at 235 in which is disposed the actuating spring 237 having a coiled central portion and projecting ends 238, 239 to hold'the dog into yielding engagement with the ratchet teeth. The engaged end of the dog is rounded and fits into a rounded seat, and the opposite end is of such width as to remain in engagement with the square forward end 'of the recess so that no pivot pin is required to keep the dog in place.

It will thus be seen that it is possible for the gear 24 to turn forward at a higher rate of speed than the gear 23. The gear 24 is connected, as has been indicated, to drive the lower shaft 5 carrying the movable forming roll 6. When the rim is being formed,

it is comparatively flexible and it is neces 25 sary until the rolls come into quite strong engagement that both rolls be driven. If this 1s not done, the machine is lacking in efiiciency in that the gradual spring or shaping of the metal .is not insured and there will be much wastage due to rims not passing inspection. Where the advance of the rolls iscontrolled and both rolls are driven effectively, very little wastage occurs. Great strain occurs on the machine, however, im-

less there arecompensating means and it will be seen that when the rolls contact, as indicated in Figs. 11 and III, that if the roll on the movable shaft is permitted to advance at a higher rate of speed than the gearing and that rollis made slightly smaller than the roll on the fixed shaft, the roll on the movable shaft can be driven by the final contact and if it is allowed to roll freely, perfect rollingwill be secured with- 46 out any undue strain. This is accomplished by the compensating means, permitting this movement to occur by allowing the car 24 to move forward more rapidly than t e gear 23. At the same time, the ratchet pawl tooth 50 242 will at once engage and drive the gear 24 when it is not being driven by the contact fof the forming rolls. The engaging end of the pawl is forced into engagement by the ring 237 and the rear wall of recess 232 5 orces it forward. While, the lower roll 6 being driven from the contact with the run it is driven at a greater rate. The teeth 242 will slide under the pawl and swing I 1 it out of engagement audit will remain out of engagement so long as that action con' tinues. This particular means is highly desii'able but is not an absolute necesity in providing for the compensation which would, of course, be taken care of by a simple ratchet in this position.

This particular means is very strong and efiective and is very simple. It is desired tp claim the same specifically as well as broadly in this special combination as pointed out in the appended claims.

I have not illustratedor described in de- I claim as new and desire to secure by Letters Patent is:

1. In a rim rolling machine, the combination of a frame, an upper roll on a fixed shaft, means for driving the same, a lower movableroll on a shaft, a slide with journal bearings for said movable roll, means for advancing said slide and roll, a drivin means for the fixed roll shaft, a chain 0 gears driven from the fixed roll shaft, one h of which is supported on a rocker and connected to drive the movable roll, a compensatmg gear 1n the said chain of gears compr1s1ng independently revoluble gears with compensating iawl and ratchet drive means therebetween, on its face and carrying a pawl and the driven gear of which has a hub-like extension with ratchet teeth disposed in said ree driving gear being recessed.

cess, a pawl recess in the face of the driving gear with a cylindrically curved convex rear portion to engage the rear end of the pawl and with a square front portion to ermit the movement of the pawl therein and maim tain its rear engagement, a awl with its rear end curved to pivot in e pawl recess and with its front end squared to enga e" the ratchet teeth and to move freely into t c said recess, the said pawl ha a longitu dinal slot through the rear en and in its upgser face, and a spring with projectin en and a central coil disposed in the. sai

slot reacting between the said pawl and the bottom wall of the recess to urge said pawl into en 'agement, the pawland ratchet parts being 0 such dimension that its outer corner remains the square end of the recess at all times whereby-the driven gear may be carried forward out of engagement with the driving gear to compensate for the varying movements of the rolls in contact with the stock when the movable roll is driven from the fixed roll more rapidly than the rate of drivepf the chain of 2; In a rim rolling machine, the combination of a frame, an upper roll on a fixed shaft, means for driving the same, a lower movable roll on a shaft, a slide with journal for and movable roll, means for advancing said slide and roll, a driving means for the fixed roll shaft, a chain ofgears driven from the fixed 'roll' shaft and connected to drive the movable'roll, a compensating gear in the said .chain of gears comprising independently revoluble gears with compensating pawl and ratchet drive means therebetween, the driving gear being recessed on its face and carrying a pawl and the driven gear of which has a hub-like extension with ratchet teeth disposed in said recess, a pawl recess in the face of the driving gear with a cylindrically curved convex rearportion toengage the rear end of the pawl and with a square front portion to permit the movement of the pawl therein and maintain its rear engagement,-apawl with its rear end curved to pivot in the pawl recess and with its .front end squared to engage the ratchet teeth and to move freely into the said recess, the said pawl having a longitudinal slot through the rear end and in its upper face, and a spring with projectingends and a central coil disposed in the said slot reacting between the said pawl and the bottom wall of the recess to urge said pawl into engagement, the pawl and ratchet parts being of such dimension that its outer corner remains within the square end of the recess at all times whereby the driven gear maybe carried forward out of engagement for the fixed roll shaft, a chain of gears driven from the fixed roll shaft and connected to drive the movable roll,'a compensating gear in the said chain of gears comprising independently revoluble gears with compensating pawl-and ratchet drive means therebetween the driving gear being recessed on its face and carrying apawl and'the' .drlven gear of which has a hub-like extension with, ratchet teeth disposed in said recess, a pawl recess in the face of the drivinggear with a cylindrically curved convex rear portion to engage,the rear end of the pawl and with a square front portion to permit the movement of the pawl therein and maintain its rear engagement, and a pawl with its rear end curved to pivot in the pawl recess and with its front end squared to engage the ratchet teeth and to move freely into the said recess, the pawl and ratchet parts being of such dimension that its outer corner remains within the square end of the recess at all times whereby the driven gear may be carried forward out of engagement with the driving gear to'compensate for the varying movements of the rolls in contact with the stock when the movable roll is driven from the fixed roll more rapidly than the rate of drive of the chain of gears.

4. In a rim rolling machine, the combination of a frame, an upper roll on a fixed shaft, means for driving the same, a lower movable roll on a shaft, a slide with journal bearings for said movable roll, means for advancing said siide and roll, a driving means for the fixed roll shaft, a chain of gears driven from the fixed roll shaft, one of which is supported on a rocker and connected to drive the movable roll, a compensating gear in the said chain of gears comprising independently revoluble gears with compensating pawl and ratchet drive means therebetween to compensate when the movable roll is driven from the fixed roll more rapidly than the rate of drive of the chain of gears.

5. In a rim rolling machine, the combination of a roll on a fixed'shaft, means for driving the same, a. movable roll-on a shaft with means for adjusting it to and from the fixed roll, a gear train for driving said movable roll, a compensating gear in said train of gears comprising independently revoluble gears with compensating pawl and ratchet drive means therebetween, the driving gear of which has a hub-like extension with ratchet teeth disposed in said recess, a. pawl recess in the face of the driving gear with a cylindricallycurved convex rear portion to engage the rear end of the pawl and with wall of the recess to urge, said pawl into en-.

gagement, the pawl and ratchet parts being of such dimension that its outer corner remains within the-square end of the recess at all times whereby the driven gear may be carried forward out of engagement with the driving gear to compensate for the varying movements of the rolls in contact with the stock when the movable-roll is driven fromthe fixed roll more rapidly than the rate of drive of the chain of gears.- I

6. In a rim rollingmachine, the combination of a roll on a fixed shaft, mean for driving-the same, a movable roll on a .haft with means for adjusting it to and from the fixed roll, a gear train for driving said movable roll, a compensating gear in said train drive means therebetween, the driving gear of which has a hub-like extension with ratchet teeth disposed in said recess, a pawl recess in the face of the driving gear with a cylindrically curved 'convex rear portion to engage the rear end of the pawl and with a square front portion to permit the movement of the pawl therein and maintain its rear engagement, a pawl with its rear end curved to pivot in the pawl recess and with its front end squared to engage the ratchet teeth and to move freely into the said recess,

driving gear to compensate for the varying 20 movements of the rolls in contact with the stock when the movable roll is driven from the fixed roll more rapidly than the rate of drive of the chain of gears.

In witness whereof I have hereunto set my 2 hand.

EMIL J. PETERSON. 

